CVE-2017-17454

Description

Mahara 16.10 before 16.10.7 and 17.04 before 17.04.5 and 17.10 before 17.10.2 have a Cross Site Scripting (XSS) vulnerability when a user enters invalid UTF-8 characters. These are now going to be discarded in Mahara along with NULL characters and invalid Unicode characters. Mahara will also avoid direct $_GET and $_POST usage where possible, and instead use param_exists() and the correct param_*() function to fetch the expected value.

Category

5.4
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.34%
Vendor Advisory mahara.org Vendor Advisory mahara.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://mahara.org/interaction/forum/topic.php?id=8149 vendor advisory
https://reviews.mahara.org/#/c/8191/ vendor advisory
https://bugs.launchpad.net/mahara/+bug/1732987 third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-17454?
CVE-2017-17454 has been scored as a medium severity vulnerability.
How to fix CVE-2017-17454?
To fix CVE-2017-17454, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-17454 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-17454 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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